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Arista PWR-500AC-R 495W/500W rear-to-front AC power supply module

Arista Networks, Inc.

Arista Networks PWR-500AC-R 495W/500W Rear-to-Front AC Power Supply for 7050X/7280

SKU CH-TPVC-AF5JG

A 495W/500W AC power supply with rear-to-front airflow for Arista 7050X and 7280 series 1RU switches

  • Delivers 495W to 500W AC power for reliable switch operation
  • Rear-to-front airflow matches 7050X and 7280 1RU chassis cooling design
  • Hot-swappable module keeps the network running during maintenance
  • Purpose-built for Arista 7050X and 7280 series compatibility
  • 500 Watt capacity supports dense port configurations in 1RU form factor

500 W AC Power Supply for 7050X/7280 Switches

This 495/500 W AC power module is built for Arista 7050X and 7280 series 1RU switches. It delivers the rated output required to keep those platforms running in data centre racks. Network engineers and infrastructure teams select it when a direct-replacement or spare unit is needed for supported Arista hardware.

Rear-to-Front Airflow for Rack Cooling

The rear-to-front airflow direction pulls cool air from the cold aisle through the chassis and exhausts it to the hot aisle. This orientation matches standard data centre hot-aisle/cold-aisle layouts and prevents recirculation inside the rack. The AC input connects directly to facility power without additional converters or adapters.

Replaces Failed or Missing OEM Power Modules

It serves as a drop-in replacement for the original Arista power supply in 7050X and 7280 1RU switches when a unit fails or a redundant slot is empty. The upgrade is justified when the switch shows power-alarm alerts, when a second module is required for N+1 redundancy, or when a maintenance window allows proactive swap-out. Not suitable for switches outside the 7050X/7280 1RU family or for front-to-rear airflow deployments.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 92% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameArista

Questions about this item

What AC input does the PWR-500AC-R accept and what maximum output does it deliver to a 7050X or 7280 switch?

The unit operates on standard AC mains and supplies up to 500 W to the switch, with a 495 W rating under typical load.

Which chassis slot and airflow direction does this rear-to-front module require in a 1RU 7050X or 7280?

It slides into the dedicated power-supply bay of a 1RU Arista 7050X or 7280 and exhausts air toward the front panel.

How is the PWR-500AC-R installed and what common step is missed?

Insert the module until the latch clicks, then secure the captive screw; the step often missed is tightening that screw to lock the unit in place.

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